US20100218919A1 - Cooling Device - Google Patents
Cooling Device Download PDFInfo
- Publication number
- US20100218919A1 US20100218919A1 US12/526,303 US52630308A US2010218919A1 US 20100218919 A1 US20100218919 A1 US 20100218919A1 US 52630308 A US52630308 A US 52630308A US 2010218919 A1 US2010218919 A1 US 2010218919A1
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- United States
- Prior art keywords
- control device
- indoor air
- port
- accommodating unit
- cooling device
- Prior art date
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- 238000001816 cooling Methods 0.000 title claims abstract description 94
- 238000007789 sealing Methods 0.000 claims description 26
- 238000010438 heat treatment Methods 0.000 claims description 23
- 238000000034 method Methods 0.000 claims description 11
- 230000008569 process Effects 0.000 claims description 11
- 239000004698 Polyethylene Substances 0.000 claims description 5
- -1 polyethylene Polymers 0.000 claims description 5
- 229920000573 polyethylene Polymers 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 16
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 16
- 230000009471 action Effects 0.000 description 15
- 239000002184 metal Substances 0.000 description 13
- 239000003795 chemical substances by application Substances 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000009545 invasion Effects 0.000 description 5
- 239000000428 dust Substances 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 239000004793 Polystyrene Substances 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012856 packing Methods 0.000 description 2
- 229920001084 poly(chloroprene) Polymers 0.000 description 2
- 229920002223 polystyrene Polymers 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000013013 elastic material Substances 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
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- 238000004519 manufacturing process Methods 0.000 description 1
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000002982 water resistant material Substances 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F12/00—Use of energy recovery systems in air conditioning, ventilation or screening
- F24F12/001—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air
- F24F12/006—Use of energy recovery systems in air conditioning, ventilation or screening with heat-exchange between supplied and exhausted air using an air-to-air heat exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20536—Modifications to facilitate cooling, ventilating, or heating for racks or cabinets of standardised dimensions, e.g. electronic racks for aircraft or telecommunication equipment
- H05K7/206—Air circulating in closed loop within cabinets wherein heat is removed through air-to-air heat-exchanger
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/20—Casings or covers
- F24F2013/207—Casings or covers with control knobs; Mounting controlling members or control units therein
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
- Y02B30/56—Heat recovery units
Definitions
- the present invention relates to a cooling device such as a heating element storing box having a heating element in its inside.
- this kind of cooling device is known to include a heat transfer plate as a sensible heat exchanger, an indoor air suction fan as an indoor air blower, an outdoor air suction fan as an outdoor air blower, and terminal blocks.
- a heat transfer plate as a sensible heat exchanger
- an indoor air suction fan as an indoor air blower
- an outdoor air suction fan as an outdoor air blower
- terminal blocks terminal blocks.
- Cooling device 101 is provided inside of door 102 of control panel 100 as a heating element storing box, and is separated into control panel inner space 103 (hereinafter called space 103 ) and control panel outer space 104 (hereinafter called space 104 ).
- Cooling device 101 has case 105 formed like a long box, and flange 106 formed vertically and laterally for mounting cooling device 101 on door 102 .
- the front side of flange 106 is provided with packing 107 for keeping airtight with door 102 .
- Case 105 includes indoor air intake hole 108 as an indoor air suction port, and indoor air exhaust hole 109 as an indoor air blow port.
- Heat transfer plate 110 is accommodated in the center of case 105 .
- Heat transfer plate 110 is made of a thin plate folded in corrugated shape, and multiple barrier walls are formed at equal intervals, and both end portions in the longitudinal direction are alternately connected every one other by bridge portions, thereby forming a plurality of indoor air side square passages 111 (hereinafter called passages 111 ) and outdoor air side square passages 112 (hereinafter called passages 112 ) positioned alternately.
- Indoor air intake hole 108 communicates with passages 111 .
- Indoor air exhaust hole 109 is provided with indoor air suction fan 113 (hereinafter called fan 113 ) as an indoor air blower by way of mounting plate 114 .
- fan 113 indoor air suction fan 113
- the upper edge of mounting plate 114 has slope 114 A for deflecting the flow of indoor air.
- outdoor air intake hole 115 is provided as an outdoor air suction port, and outdoor air exhaust hole 116 as an outdoor air blow port is formed in the upper part of door 102 .
- Outdoor air intake hole 115 communicates with passages 112 .
- Outdoor air exhaust hole 116 is provided with outdoor air suction fan 117 (hereinafter called fan 117 ) as an outdoor air blower by way of mounting plate 118 .
- Terminal blocks 119 are provided in the upper part of case 105 and in the upper part of mounting plate 114 .
- Lead wire 113 A of fan 113 and lead wire 117 A of fan 117 are respectively connected to the inside of terminal blocks 119 , and are connected outside of case 105 by using wires 120 .
- Wires (not shown) are distributed from either one of two terminal blocks 119 .
- the high temperature air in space 103 is sucked in from indoor air intake hole 108 as indicated by arrow a, and is distributed in passages 111 , and is returned again into space 103 by means of fan 113 .
- the low temperature air in space 104 is sucked in from outdoor air intake hole 115 as indicated by arrow b, and is distributed in passages 112 , and is returned again into space 104 by means of fan 117 .
- cooling device 100 having a control device (not shown) for controlling the operation of fan 113 and the operation of fan 117 .
- the control device is installed in a section in which fan 113 or fan 117 is disposed. Therefore, depending on the location of the control device, the air flow rate may be lowered, or the air blowing state to the heat transfer plate may be biased, and the cooling capacity may tend to decline.
- Patent document 1 Japanese Utility Model Application Laid-Open No. H5-8253
- the present invention provides a cooling device decreased in drop of air flow rate and drop of cooling capacity due to mounting of control device.
- the heat exchanger of the present invention includes a box body, an indoor air channel, an outdoor air channel, an indoor air blower, an outdoor air blower, a heat exchanger, a control device, and a control device accommodating unit, and the box body is provided in a heating element storing box for storing a heating element, and at least one side is formed by a detachable panel, and the indoor air channel sucks in and circulates the air in the heating element storing box, the outdoor air channel sucks in and circulates the outdoor air, the indoor air blower conveys air into the indoor air channel, the outdoor air blower conveys air into the outdoor air channel, the heat exchanger has an indoor air flow-in port, and exchanges sensible heat between the air in the indoor air channel and the air in the outdoor air channel, the control device controls the indoor air blower and the outdoor air blower, and the control device accommodating unit accommodates the control device.
- the indoor air blower and the outdoor air blower are installed so that the axial direction of the rotary shaft and the air suction direction may be parallel to each other, and the sensible heat exchanger is disposed at the downstream side of the indoor air blower and the outdoor air blow, and the indoor air flow-in port and the control device accommodating unit are disposed adjacently to the accommodating section of the indoor air blower, and impellers of the indoor air blower are opposite to each other in the sequence of the indoor air flow-in port and the control device accommodating unit, by rotation of the impellers, and a space is further formed between the indoor air flow-in port and the control device accommodating unit.
- FIG. 1 is a front view of a cooling device in preferred embodiment 1 of the present invention.
- FIG. 2 is a rear view of the cooling device shown in FIG. 1 .
- FIG. 3 is a schematic side structural diagram showing a state of the cooling device shown in FIG. 1 being installed in a heating element storing box.
- FIG. 4 is an internal structural diagram of the cooling device shown in FIG. 1 .
- FIG. 5 is a partial exploded perspective view of a heat exchanger of the cooling device shown in FIG. 1 .
- FIG. 6 is a magnified perspective view of accommodating section of indoor side turbo fan of the cooling device shown in FIG. 1 .
- FIG. 7 is a schematic perspective view showing a mounting state of indoor air duct of the cooling device shown in FIG. 1 .
- FIG. 8 is a schematic sectional structural diagram along section line 8 - 8 of the cooling device shown in FIG. 4 .
- FIG. 9 is an internal schematic perspective view of controller box in a cooling device in preferred embodiment 2 of the present invention.
- FIG. 10 is a schematic perspective view showing relative positions of indoor air duct and exhaust port of controller box of the cooling device shown in FIG. 9 .
- FIG. 11 is an internal schematic perspective view of controller box in a cooling device in preferred embodiment 3 of the present invention.
- FIG. 12 is a magnified view of a corner area of a case accommodating an outdoor side turbo fan in a cooling device in preferred embodiment 4 of the present invention.
- FIG. 13 is a partially magnified view of an opening portion of flange in a cooling device in preferred embodiment 5 of the present invention.
- FIG. 14 is a schematic perspective view showing the top side before sealing process of cooling device in a cooling device in preferred embodiment 6 of the present invention.
- FIG. 15 is a schematic perspective view showing the top side after sealing process of the cooling device shown in FIG. 14 .
- FIG. 16 is a side schematic sectional view of a conventional cooling device.
- FIG. 1 is a front view of cooling device 31 in preferred embodiment 1 of the present invention.
- FIG. 2 is a rear view of cooling device 31 .
- FIG. 3 is a schematic side structural diagram showing a state of cooling device 31 being installed in heating element storing box 4 (hereinafter called box 4 ).
- FIG. 4 is an internal structural diagram of cooling device 31 .
- FIG. 5 is a partial exploded perspective view of heat exchanger 9 of cooling device 31 .
- FIG. 6 is a magnified perspective view of section 50 for accommodating indoor side turbo fan 7 (hereinafter called fan 7 ) of cooling device 31 .
- FIG. 7 is a schematic perspective view showing a mounting state of indoor air duct 17 (hereinafter called duct 17 ) of cooling device 31 .
- FIG. 8 is a schematic sectional structural diagram along section line 8 - 8 of cooling device 31 shown in FIG. 4 .
- the housing of cooling device 31 is composed of case 35 as a box body, and first panel 1 (hereinafter called panel 1 ) and second panel 2 (hereinafter called panel 2 ). Panels 1 and 2 are detachably fitted to case 35 . Panels 1 and 2 respectively form a part of the box body.
- At the back side of case 35 there are outdoor air intake hole 45 for taking the outdoor air into case 35 , and outdoor air exhaust hole 46 for exhausting outdoor air out of case 35 .
- the outdoor air is the air outside of box 4 and cooling device 31 , that is, the air outside of the machine.
- Top face 35 d, both lateral faces 35 e, and bottom face 35 f of case 35 are individually provided with flanges 3 .
- Panel 1 has indoor air intake hole 38 for taking the indoor air, that is, the air in box 4 into case 35 .
- Panel 2 has indoor air exhaust hole 39 for returning the indoor air taken into case 35 back into box 4 .
- the inside of box 4 contains electronic components, or heating elements (not shown) as heat generation source such as control board.
- flanges 3 are fixed to box 4 by using fixing screws 5 (hereinafter called screws 5 ).
- screws 5 have the function of tightening member.
- Flanges 3 have openings 3 c, and screws 5 fix flanges 3 and box 4 by way of openings 3 c.
- sealing member 6 made of neoprene rubber or the like is disposed. By means of sealing member 6 , invasion of rainwater or dust into box 4 from the fixing part of cooling device 31 and box 4 can be prevented.
- fan 7 is disposed in the upper part of case 35 .
- outdoor side turbo fan 8 (hereinafter called fan 8 ) is disposed in the lower part of case 35 .
- Fan 7 has impeller 7 c
- fan 8 has impeller 8 c.
- Rotary shaft 7 a of fan 7 and rotary shaft 8 a of fan 8 disposed so that the axial direction and air sucking direction of rotary shafts 7 a, 8 a may be parallel to each other.
- Heat exchanger 9 Between fan 7 and fan 8 , there is heat exchanger 9 for exchanging sensible heat between the indoor air blown by fan 7 and the outside air blown by fan 8 .
- Heat exchanger 9 has indoor air flow-in port 16 (hereinafter called flow-in port 16 ) for sucking the indoor air into heat exchanger 9 , and outdoor air flow-in port 16 a (hereinafter called flow-in port 16 a ) for sucking the outdoor air into heat exchanger 9 .
- Flow-in port 16 is provided at the downstream side of blow-out port 52 of fan 7 , opposite to blow-out port 52 .
- Flow-in port 16 a is provided at the downstream side of blow-out port 53 of fan 8 , opposite to blow-out port 53 .
- heat exchanger 9 provided at the downstream side of fan 7 and fan 8 .
- heat exchanger 9 is formed by laminating a multiplicity of first heat transfer plates 10 (hereinafter called heat transfer plates 10 ), and a multiplicity of second heat transfer plates 11 (hereinafter called heat transfer plates 11 ).
- heat transfer plates 10 , 11 sheet materials such as polystyrene sheets are formed in vacuum, and a multiplicity of L-shaped air channels are formed.
- air channels 12 individually independent indoor side air channels 12
- outdoor side air channels 13 individually independent indoor side air channels 12
- Air channel 12 forms the indoor air channel
- air channel 13 forms the outdoor air channel.
- the outer side of heat transfer plates 10 and the outer side of heat transfer plates 11 are thermally fused, and the multiplicity of heat transfer plates 10 and the multiplicity of heat transfer plates 11 are integrally formed.
- FIG. 5 only two each of heat transfer plates 10 , 11 are shown.
- the number of heat transfer plates 10 , 11 is not limited to two.
- the individual configuration may be determined in consideration of the required performance of heat exchange of heat exchanger 9 .
- control device 14 having a microcomputer, and other electronic components are accommodated in controller box 15 (hereinafter called box 15 ) as a control device accommodating unit.
- control device 14 has a configuration of printed board.
- Box 15 is contained in a same section as section 50 where fan 7 in the upper part of case 35 is stored. Further, box 15 is stored at the side in opposite direction to flow-in port 16 , with respect to the tangential direction of rotation of fan 7 rotating clockwise in rotating direction 7 b to rotary shaft 7 a of fan 7 . That is, as shown in FIG.
- box 15 is disposed so that the tangential direction of rotation of fan 7 may be at the upward side from the horizontal direction when stored in section 50 for accommodating fan 7 .
- Flow-in port 16 is disposed so that the tangential direction of rotation of fan 7 may be at the downward side from the horizontal direction.
- Flow-in port 16 and box 15 are disposed adjacently to each other in section 50 for accommodating fan 7 , and impeller 7 c is sequentially opposite to flow-in port 16 and box 15 by rotation of impeller 7 c. That is, as shown in FIG. 4 and FIG. 6 , flow-in port 16 is disposed downward toward fan 7 , and box 15 is disposed at the left side toward fan 7 .
- Box 15 is disposed so that space 51 may be formed between box 15 and flow-in port 16 . Space 51 exists on blow-out port 52 in the tangential direction of rotating direction 7 b of fan 7 .
- indoor air duct 17 (hereinafter called duct 17 ) is fixed in panel 1 so as to surround indoor air intake hole 38 .
- the indoor air in box 4 passes through duct 17 , and is taken into case 35 from indoor air intake hole 38 .
- the indoor air blown out from fan 7 is sent into heat exchanger 9 , and the sensible heat is exchanged with the outdoor air by heat exchanger 9 , and is cooled.
- the indoor air is returned to box 4 from indoor air exhaust hole 39 . That is, circulation 61 of indoor air passing through passage 12 is formed.
- the outdoor air is taken into case 35 from outdoor air intake hole 45 and is blown out from fan 8 into heat exchanger 9 is exchanged in sensible heat with the indoor air by heat exchanger 9 . Then the outdoor air is exhausted to outdoor from outdoor air exhaust hole 46 . That is, circulation 62 of outdoor air passing through passage 13 is formed.
- detachable plate members are formed by panels 1 , 2 , and panels 1 , 2 are two divided sections. But, the same action and effects are obtained if panels 1 , 2 are formed integrally or divided into more than two pieces.
- Fan 7 is used as an indoor air blower and fan 8 is used as an outdoor air blower. Not limited to this configuration, the same action and effects are obtained if similar fans are used.
- heat exchanger 9 As heat exchanger 9 , a multiplicity of heat transfer plates 10 , 11 are laminated in which polystyrene sheets are molded in vacuum, and L-shaped air channels are formed. Further, by the multiplicity of heat transfer plates 10 , 11 , individually independent air channels 12 , 13 are formed, and the outer surfaces of heat transfer plates 10 , 11 are thermally fused, an integrated heat exchanger 9 is composed. However, as far as the indoor air and outdoor air flow in mutually independent air channels 12 , 13 and the sensible heat is exchanged, the same action and effects are obtained if heat exchangers of other manufacturing process, material or air channel shape are used.
- sealing member 6 neoprene rubber is used. However, the same action and effects are obtained if an elastic material of waterproof and airtight properties is used.
- FIG. 9 is an internal schematic perspective view of controller box 15 in cooling device 31 in preferred embodiment 2 of the present invention.
- FIG. 10 is a schematic perspective view showing relative positions of indoor air duct 17 and exhaust port 19 of controller box 15 .
- intake port 18 of box 15 communicates with same section 50 as blow-out port 52 of fan 7 . That is, intake port 18 communicates with section 50 at high pressure side of fan 7 , and is also provided near printed board 14 a contained in box 15 .
- Printed board 14 a is a part of control device 14 , and is a heating element which generates a large amount of heat. As a result, printed board 14 a exists near the high temperature area in box 15 . Therefore, intake port 18 is disposed in the high temperature area in box 15 .
- exhaust port 19 of box 15 is formed on panel 1 near printed board 14 a in box 15 . That is, exhaust port 19 is also disposed near the high temperature area in box 15 . Further, exhaust port 19 communicates with duct 17 . That is, exhaust port 19 communicates with section 50 a at low pressure side.
- Intake port 18 and exhaust port 19 are disposed in high temperature area near printed board 14 a. Hence the high temperature air near printed board 14 a is securely exhausted, and printed board 14 a, that is, cooling device 14 is cooled effectively.
- the location of intake port 18 and the location of exhaust port 19 are only examples, and the configuration is not particularly specified. That is, same action and effects are obtained if intake port 18 is disposed to communicate with the high pressure section in section 50 at the high pressure side of fan 7 , and exhaust port 19 is disposed to communicate with the low pressure section of section 50 a at the low pressure side of fan 7 , and further if either one of intake port 18 and exhaust port 19 is disposed in high temperature area near printed board 14 a.
- FIG. 11 is an internal schematic perspective view of controller box 15 in preferred embodiment 3 of the present invention.
- Intake port 18 communicates with section 50 at the high pressure side of fan 7 . Further, intake port 18 is provided on back side 15 a of box 15 on an extension line linking exhaust port 19 and printed board 14 a. Exhaust port 19 communicates with duct 17 .
- Print board 14 a is disposed on the way of air stream 64 flowing straightly from intake port 18 to exhaust port 19 . Hence, the high temperature air around printed board 14 a is securely exhausted, and printed board 14 a, that is, control device 14 is cooled effectively.
- the location of intake port 18 and the location of exhaust port 19 are only examples, and the configuration is not particularly specified. That is, same action and effects are obtained if printed board 14 a, intake port 18 , and exhaust port 19 are substantially disposed straightly.
- FIG. 12 is a magnified view of corner part 20 of case 35 accommodating outdoor side turbo fan 8 in preferred embodiment 4 of the present invention.
- Case 35 is composed of plate metal member 35 a and plate metal member 35 b. At corner part 20 of plate metal member 35 a and plate metal member 35 b, end portions of plate metal members 35 a, 35 b abut against each other. Accordingly, in the abutting portion of corner part 20 , a small hole communicating with outside of cooling device 31 is formed as drain hole 21 .
- corner part 20 abuts against a plurality of members facing the outside of cooling device 31 . Further, the portion communicating with outside of cooling device 31 is treated by caulking as sealing process for preventing invasion of dust or rainwater from outside. In cooling device 31 , however, since corner part 20 is not caulked, drain hole 21 is formed. Drain hole 21 functions for draining the rainwater invading into section 50 b for accommodating fan 8 from outdoor air intake hole 45 , and drains the rainwater invading into section 50 b quickly. As a result, invasion of rainwater into the inside of box 4 is prevented.
- drain hole 21 should be small enough so as not to lower the cooling performance due to leak of the air blown by fan 8 massively outside of cooling device 31 , and large enough to drain water securely.
- cooling device 31 in preferred embodiment 4 may be further added to cooling device 31 in preferred embodiments 1 to 3, and same action and effects are obtained.
- FIG. 13 is a partially magnified view of opening part 3 c of flange 3 in preferred embodiment 5 of the present invention.
- Flange 3 includes flange 3 a as a first fixing member and flange 3 b as a second fixing member.
- Flange 3 a is attached to top face 35 d of cooling device 31 .
- Flange 3 b is attached to both lateral faces 35 e and bottom face 35 f of cooling device 31 .
- Opening part 3 c for passing screw 5 has round hole 22 as a first opening part, and U-cut 23 as a second opening part.
- Round hole 22 is formed in flange 3 a
- U-cut 23 is formed in flange 3 b.
- U-cut 23 has a U-shaped notch.
- U-cut 23 is similarly formed in flange 3 b attached to lateral face 35 e and bottom face 35 f at the opposite side of cooling device 31 .
- opening part 3 c of flange 3 a is round hole 22 of circular hole shape
- opening part 3 c of flange 3 b is U-cut 23 of U-shape.
- opening part 3 c of flange 3 a has a round hole shape.
- opening part 3 c of flange 3 a has square hole, polygonal hole, or other shape capable of covering the upper part of screw 5 penetrating through opening part 3 c.
- the notch shape of flange 3 b is a U-cut.
- same action and effects are obtained as far as the end portion of flange 3 b is an open shape, not limited to U-cut 23 , possibly including V-cut and others.
- cooling device 31 in preferred embodiment 5 may be further added to cooling device 31 in preferred embodiments 1 to 4, and same action and effects are obtained.
- FIG. 14 is a schematic perspective view of top face 35 d before sealing process of cooling device 31 in preferred embodiment 6 of the present invention.
- FIG. 15 is a schematic perspective view of top face 35 d after sealing process of cooling device 31 .
- case 35 is composed of plate metal member 35 a and plate metal member 35 c. Ridge portion 24 of case 35 in the abutting portion of plate metal members 35 a, 35 c is filled with caulking agent 25 and sealing agent. Caulking agent 25 is applied for sealing of cooling device 31 .
- the junction of plate metal member 35 a and plate metal member 35 c, and the junction of case 35 and flange 3 are bonded by using rivets 26 . Further, the portion bonded by using rivets 26 may be also sealed by using caulking agent 25 .
- ridge portion 24 formed by top face 35 d and lateral face 35 e is further adhered with waterproof tape 27 as sealing process.
- Top face 35 d is adhered with sealing and insulating part 28 (hereafter called insulating part 28 ) as a member having sealing effect and insulating effect, so as to cover rivets 26 .
- Insulating part 28 is formed by using polyethylene sheet. Since insulating part 28 is formed by using polyethylene sheet, a high sealing performance and excellent insulating performance of cooling device 31 is realized in a simple configuration.
- ridge portion 24 is insulated in a double structure by caulking agent 25 and waterproof tape 27 . Therefore, if one sealing process is defective, the sealed state is maintained by other sealing process. Hence, if rainwater is collected in top face 35 d, invasion of rainwater into cooling device 31 along the junction portion of plate metal member 35 a and plate metal member 35 c, and the junction portion with rivets 26 can be securely prevented.
- cooling device 31 is installed outdoors, and rainwater is collected in top face 35 d, invasion of rainwater into cooling device 31 is prevented. Further, by insulating action of insulating part 28 , if cooling device 31 is installed outdoors, and top face 35 d is exposed to direct sunlight, temperature elevation by sunlight of section 50 for accommodating fan 7 positioned at the rear side of top face 35 d can be suppressed, and drop of cooling performance of cooling device 31 can be lessened.
- Caulking agent 25 as sealing agent and waterproof tape 27 as sealing process in the present preferred embodiment are only examples, and are not particularly specified. Same action and effects are obtained by using members having similar waterproof and weatherproof properties and sealing properties of the junction portions.
- a polyethylene sheet is used for insulating part 28 .
- insulating part 28 is not limited to polyethylene sheet alone. Same action and effects are obtained if insulating part 28 is made of waterproof, water resistant and heat resistant materials.
- cooling device 31 in preferred embodiment 6 may be further added to cooling device 31 in preferred embodiments 1 to 5, and same action and effects are obtained.
- the present invention is useful as a cooling device of a heating element storing box, such as a box-like structure installed outdoors such as mobile telephone base station or simple radio station, having heating elements such as communication devices in the inside, requiring cooling even in winter because the heat generation amount of heating elements is large, and having precision devices of which performance and life may be influenced by temperature, humidity, dust or rainwater.
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Abstract
Description
- The present invention relates to a cooling device such as a heating element storing box having a heating element in its inside.
- Recently, electronic components are becoming higher in performance and the packing density of electronic components on a control board is becoming higher, and the amount of heat generation from the control board is increasing dramatically. As a result, the internal temperature of the heating element storing box for accommodating electronic components tends to be higher, and the temperature in the heating element storing box has a vital effect on guarantee of operation and product life of electronic components mounted on the control board. It is hence demanded to cool the temperature in the heating element storing box below a specific point by using a cooling device.
- Conventionally, this kind of cooling device is known to include a heat transfer plate as a sensible heat exchanger, an indoor air suction fan as an indoor air blower, an outdoor air suction fan as an outdoor air blower, and terminal blocks. Such conventional cooling device is disclosed, for example, in patent document 1 (Japanese Utility Model Application Laid-Open No. H5-8253).
- The conventional cooling device is described below while referring to
FIG. 16 .Cooling device 101 is provided inside ofdoor 102 ofcontrol panel 100 as a heating element storing box, and is separated into control panel inner space 103 (hereinafter called space 103) and control panel outer space 104 (hereinafter called space 104).Cooling device 101 hascase 105 formed like a long box, andflange 106 formed vertically and laterally for mountingcooling device 101 ondoor 102. The front side offlange 106 is provided with packing 107 for keeping airtight withdoor 102. -
Case 105 includes indoorair intake hole 108 as an indoor air suction port, and indoorair exhaust hole 109 as an indoor air blow port.Heat transfer plate 110 is accommodated in the center ofcase 105.Heat transfer plate 110 is made of a thin plate folded in corrugated shape, and multiple barrier walls are formed at equal intervals, and both end portions in the longitudinal direction are alternately connected every one other by bridge portions, thereby forming a plurality of indoor air side square passages 111 (hereinafter called passages 111) and outdoor air side square passages 112 (hereinafter called passages 112) positioned alternately. Indoorair intake hole 108 communicates withpassages 111. Indoorair exhaust hole 109 is provided with indoor air suction fan 113 (hereinafter called fan 113) as an indoor air blower by way ofmounting plate 114. The upper edge ofmounting plate 114 hasslope 114A for deflecting the flow of indoor air. - In the middle of
door 102, outdoorair intake hole 115 is provided as an outdoor air suction port, and outdoorair exhaust hole 116 as an outdoor air blow port is formed in the upper part ofdoor 102. Outdoorair intake hole 115 communicates withpassages 112. Outdoorair exhaust hole 116 is provided with outdoor air suction fan 117 (hereinafter called fan 117) as an outdoor air blower by way ofmounting plate 118. -
Terminal blocks 119 are provided in the upper part ofcase 105 and in the upper part ofmounting plate 114.Lead wire 113A offan 113 andlead wire 117A offan 117 are respectively connected to the inside ofterminal blocks 119, and are connected outside ofcase 105 by usingwires 120. Wires (not shown) are distributed from either one of twoterminal blocks 119. - When
cooling device 101 is put in operation, the high temperature air inspace 103 is sucked in from indoorair intake hole 108 as indicated by arrow a, and is distributed inpassages 111, and is returned again intospace 103 by means offan 113. On the other hand, the low temperature air inspace 104 is sucked in from outdoorair intake hole 115 as indicated by arrow b, and is distributed inpassages 112, and is returned again intospace 104 by means offan 117. By such forced convection, heat is exchanged through barrier walls ofheat transfer plate 110, and the air incontrol panel 100 is cooled. - Recently, in order to operate
cooling device 100 more efficiently, it has been attempted to developcooling device 100 having a control device (not shown) for controlling the operation offan 113 and the operation offan 117. In suchconventional cooling device 100, however, the control device is installed in a section in whichfan 113 orfan 117 is disposed. Therefore, depending on the location of the control device, the air flow rate may be lowered, or the air blowing state to the heat transfer plate may be biased, and the cooling capacity may tend to decline. - Patent document 1: Japanese Utility Model Application Laid-Open No. H5-8253
- The present invention provides a cooling device decreased in drop of air flow rate and drop of cooling capacity due to mounting of control device.
- The heat exchanger of the present invention includes a box body, an indoor air channel, an outdoor air channel, an indoor air blower, an outdoor air blower, a heat exchanger, a control device, and a control device accommodating unit, and the box body is provided in a heating element storing box for storing a heating element, and at least one side is formed by a detachable panel, and the indoor air channel sucks in and circulates the air in the heating element storing box, the outdoor air channel sucks in and circulates the outdoor air, the indoor air blower conveys air into the indoor air channel, the outdoor air blower conveys air into the outdoor air channel, the heat exchanger has an indoor air flow-in port, and exchanges sensible heat between the air in the indoor air channel and the air in the outdoor air channel, the control device controls the indoor air blower and the outdoor air blower, and the control device accommodating unit accommodates the control device. Further, the indoor air blower and the outdoor air blower are installed so that the axial direction of the rotary shaft and the air suction direction may be parallel to each other, and the sensible heat exchanger is disposed at the downstream side of the indoor air blower and the outdoor air blow, and the indoor air flow-in port and the control device accommodating unit are disposed adjacently to the accommodating section of the indoor air blower, and impellers of the indoor air blower are opposite to each other in the sequence of the indoor air flow-in port and the control device accommodating unit, by rotation of the impellers, and a space is further formed between the indoor air flow-in port and the control device accommodating unit. By this configuration, it hence realizes a cooling device decreased in drop of air flow rate and drop of cooling capacity due to mounting of control device.
-
FIG. 1 is a front view of a cooling device inpreferred embodiment 1 of the present invention. -
FIG. 2 is a rear view of the cooling device shown inFIG. 1 . -
FIG. 3 is a schematic side structural diagram showing a state of the cooling device shown inFIG. 1 being installed in a heating element storing box. -
FIG. 4 is an internal structural diagram of the cooling device shown inFIG. 1 . -
FIG. 5 is a partial exploded perspective view of a heat exchanger of the cooling device shown inFIG. 1 . -
FIG. 6 is a magnified perspective view of accommodating section of indoor side turbo fan of the cooling device shown inFIG. 1 . -
FIG. 7 is a schematic perspective view showing a mounting state of indoor air duct of the cooling device shown inFIG. 1 . -
FIG. 8 is a schematic sectional structural diagram along section line 8-8 of the cooling device shown inFIG. 4 . -
FIG. 9 is an internal schematic perspective view of controller box in a cooling device inpreferred embodiment 2 of the present invention. -
FIG. 10 is a schematic perspective view showing relative positions of indoor air duct and exhaust port of controller box of the cooling device shown inFIG. 9 . -
FIG. 11 is an internal schematic perspective view of controller box in a cooling device inpreferred embodiment 3 of the present invention. -
FIG. 12 is a magnified view of a corner area of a case accommodating an outdoor side turbo fan in a cooling device inpreferred embodiment 4 of the present invention. -
FIG. 13 is a partially magnified view of an opening portion of flange in a cooling device inpreferred embodiment 5 of the present invention. -
FIG. 14 is a schematic perspective view showing the top side before sealing process of cooling device in a cooling device inpreferred embodiment 6 of the present invention. -
FIG. 15 is a schematic perspective view showing the top side after sealing process of the cooling device shown inFIG. 14 . -
FIG. 16 is a side schematic sectional view of a conventional cooling device. -
- 1 First panel
- 2 Second panel
- 3, 3 a, 3 b Flange
- 3 c Opening part
- 4 Heating element storing box
- 5 Fixing screw
- 6 Sealing member
- 7 Indoor side turbo fan
- 7 a, 8 a Rotary shaft
- 7 b Rotating direction
- 7 c, 8 c Impeller
- 8 Outdoor side turbo fan
- 9 Heat exchanger
- 10 First heat transfer plate
- 11 Second heat transfer plate
- 12 Indoor side air channel
- 13 Outdoor side air channel
- 14 Control device
- 14 a Printed board
- 15 Controller box
- 15 a Back side
- 16 Indoor air flow-in port
- 16 a Outdoor air flow-in port
- 17 Indoor air duct
- 18 Intake port
- 19 Exhaust port
- 20 Corner part
- 21 Drain hole
- 22 Round hole
- 23 U-cut
- 24 Ridge portion
- 25 Caulking agent
- 26 Rivet
- 27 Waterproof tape
- 28 Sealing and insulating part
- 35 Case
- 35 a, 35 b, 35 c Plate metal member
- 35 d Top face
- 35 e Lateral face
- 35 f Bottom face
- 38 Indoor air intake hole
- 39 Indoor air exhaust hole
- 45 Outdoor air intake hole
- 46 Outdoor air exhaust hole
- 50, 50 a, 50 b Section
- 51 Space
- 52, 53 Blow-out port
- 61, 62 Circulation
- 63, 64 Air stream
- Preferred embodiments of the invention are described below while referring to the accompanying drawings.
-
Preferred embodiment 1 of the present invention is described while referring toFIG. 1 toFIG. 8 .FIG. 1 is a front view ofcooling device 31 inpreferred embodiment 1 of the present invention.FIG. 2 is a rear view ofcooling device 31.FIG. 3 is a schematic side structural diagram showing a state of coolingdevice 31 being installed in heating element storing box 4 (hereinafter called box 4).FIG. 4 is an internal structural diagram of coolingdevice 31.FIG. 5 is a partial exploded perspective view ofheat exchanger 9 of coolingdevice 31.FIG. 6 is a magnified perspective view ofsection 50 for accommodating indoor side turbo fan 7 (hereinafter called fan 7) ofcooling device 31.FIG. 7 is a schematic perspective view showing a mounting state of indoor air duct 17 (hereinafter called duct 17) ofcooling device 31.FIG. 8 is a schematic sectional structural diagram along section line 8-8 of coolingdevice 31 shown inFIG. 4 . - As shown in
FIG. 1 andFIG. 2 , the housing of coolingdevice 31 is composed ofcase 35 as a box body, and first panel 1 (hereinafter called panel 1) and second panel 2 (hereinafter called panel 2).Panels case 35.Panels case 35, there are outdoorair intake hole 45 for taking the outdoor air intocase 35, and outdoorair exhaust hole 46 for exhausting outdoor air out ofcase 35. The outdoor air is the air outside ofbox 4 andcooling device 31, that is, the air outside of the machine.Top face 35 d, both lateral faces 35 e, andbottom face 35 f ofcase 35 are individually provided withflanges 3.Panel 1 has indoorair intake hole 38 for taking the indoor air, that is, the air inbox 4 intocase 35.Panel 2 has indoorair exhaust hole 39 for returning the indoor air taken intocase 35 back intobox 4. The inside ofbox 4 contains electronic components, or heating elements (not shown) as heat generation source such as control board. - As shown in
FIG. 3 ,flanges 3 are fixed tobox 4 by using fixing screws 5 (hereinafter called screws 5). Thus, coolingdevice 31 is tightened tobox 4. That is,flanges 3 have the function of fixing member for installingcooling device 31 inbox 4, and screws 5 have the function of tightening member.Flanges 3 haveopenings 3 c, and screws 5fix flanges 3 andbox 4 by way ofopenings 3 c. Betweenflanges 3 andbox 4, sealingmember 6 made of neoprene rubber or the like is disposed. By means of sealingmember 6, invasion of rainwater or dust intobox 4 from the fixing part of coolingdevice 31 andbox 4 can be prevented. - Further, as shown in
FIG. 4 , as an indoor air blower,fan 7 is disposed in the upper part ofcase 35. As an outdoor air blower, outdoor side turbo fan 8 (hereinafter called fan 8) is disposed in the lower part ofcase 35.Fan 7 hasimpeller 7 c, andfan 8 hasimpeller 8 c. By rotation ofimpellers fans Rotary shaft 7 a offan 7 androtary shaft 8 a offan 8 disposed so that the axial direction and air sucking direction ofrotary shafts fan 7 andfan 8, there isheat exchanger 9 for exchanging sensible heat between the indoor air blown byfan 7 and the outside air blown byfan 8.Heat exchanger 9 has indoor air flow-in port 16 (hereinafter called flow-in port 16) for sucking the indoor air intoheat exchanger 9, and outdoor air flow-inport 16 a (hereinafter called flow-inport 16 a) for sucking the outdoor air intoheat exchanger 9. Flow-inport 16 is provided at the downstream side of blow-outport 52 offan 7, opposite to blow-outport 52. Flow-inport 16 a is provided at the downstream side of blow-outport 53 offan 8, opposite to blow-outport 53. Thus,heat exchanger 9 provided at the downstream side offan 7 andfan 8. - As shown in
FIG. 5 , moreover,heat exchanger 9 is formed by laminating a multiplicity of first heat transfer plates 10 (hereinafter called heat transfer plates 10), and a multiplicity of second heat transfer plates 11 (hereinafter called heat transfer plates 11). Inheat transfer plates heat transfer plates Air channel 12 forms the indoor air channel, andair channel 13 forms the outdoor air channel. The outer side ofheat transfer plates 10 and the outer side ofheat transfer plates 11 are thermally fused, and the multiplicity ofheat transfer plates 10 and the multiplicity ofheat transfer plates 11 are integrally formed. InFIG. 5 , only two each ofheat transfer plates heat transfer plates heat exchanger 9. - As shown in
FIG. 6 , in order to control the rotating speed offan 7 and the rotating speed offan 8,control device 14 having a microcomputer, and other electronic components are accommodated in controller box 15 (hereinafter called box 15) as a control device accommodating unit. For example,control device 14 has a configuration of printed board.Box 15 is contained in a same section assection 50 wherefan 7 in the upper part ofcase 35 is stored. Further,box 15 is stored at the side in opposite direction to flow-inport 16, with respect to the tangential direction of rotation offan 7 rotating clockwise inrotating direction 7 b torotary shaft 7 a offan 7. That is, as shown inFIG. 4 ,box 15 is disposed so that the tangential direction of rotation offan 7 may be at the upward side from the horizontal direction when stored insection 50 for accommodatingfan 7. Flow-inport 16 is disposed so that the tangential direction of rotation offan 7 may be at the downward side from the horizontal direction. Flow-inport 16 andbox 15 are disposed adjacently to each other insection 50 for accommodatingfan 7, andimpeller 7 c is sequentially opposite to flow-inport 16 andbox 15 by rotation ofimpeller 7 c. That is, as shown inFIG. 4 andFIG. 6 , flow-inport 16 is disposed downward towardfan 7, andbox 15 is disposed at the left side towardfan 7.Box 15 is disposed so thatspace 51 may be formed betweenbox 15 and flow-inport 16.Space 51 exists on blow-outport 52 in the tangential direction ofrotating direction 7 b offan 7. - As shown in
FIG. 7 , for feeding indoor air into indoorair intake hole 38, as an indoor air feed unit, indoor air duct 17 (hereinafter called duct 17) is fixed inpanel 1 so as to surround indoorair intake hole 38. - In this configuration, as shown in
FIG. 8 , the indoor air inbox 4 passes throughduct 17, and is taken intocase 35 from indoorair intake hole 38. The indoor air blown out fromfan 7 is sent intoheat exchanger 9, and the sensible heat is exchanged with the outdoor air byheat exchanger 9, and is cooled. Then the indoor air is returned tobox 4 from indoorair exhaust hole 39. That is,circulation 61 of indoor air passing throughpassage 12 is formed. - On the other hand, the outdoor air is taken into
case 35 from outdoorair intake hole 45 and is blown out fromfan 8 intoheat exchanger 9 is exchanged in sensible heat with the indoor air byheat exchanger 9. Then the outdoor air is exhausted to outdoor from outdoorair exhaust hole 46. That is,circulation 62 of outdoor air passing throughpassage 13 is formed. - At this time, since
fan 7 rotates clockwise, the air blow out fromfan 7 is supplied also intospace 51 betweenheat exchanger 9 and beneathbox 15 disposed at the left side offan 7. As a result, the air is smoothly passed also into flow-inport 16 beneathbox 15, and is sent entirely intoair channel 12 ofheat exchanger 9. As a result, it is effective to decrease drop of air flow rate and drop of cooling capacity due to increase of pressure loss by reduction of air channel inheat exchanger 9. - As explained in the present
preferred embodiment 1, incase 35, detachable plate members are formed bypanels panels panels -
Fan 7 is used as an indoor air blower andfan 8 is used as an outdoor air blower. Not limited to this configuration, the same action and effects are obtained if similar fans are used. - As
heat exchanger 9, a multiplicity ofheat transfer plates heat transfer plates independent air channels heat transfer plates integrated heat exchanger 9 is composed. However, as far as the indoor air and outdoor air flow in mutuallyindependent air channels - As sealing
member 6, neoprene rubber is used. However, the same action and effects are obtained if an elastic material of waterproof and airtight properties is used. -
Preferred embodiment 2 of the present invention is described below while referring toFIG. 9 andFIG. 10 . Same components as inpreferred embodiment 1 are identified with same reference numerals, and detailed description is omitted.FIG. 9 is an internal schematic perspective view ofcontroller box 15 in coolingdevice 31 inpreferred embodiment 2 of the present invention.FIG. 10 is a schematic perspective view showing relative positions ofindoor air duct 17 andexhaust port 19 ofcontroller box 15. - As shown in
FIG. 9 andFIG. 10 , as a flow-in port of control device accommodating unit,intake port 18 ofbox 15 communicates withsame section 50 as blow-outport 52 offan 7. That is,intake port 18 communicates withsection 50 at high pressure side offan 7, and is also provided near printedboard 14 a contained inbox 15. Printedboard 14 a is a part ofcontrol device 14, and is a heating element which generates a large amount of heat. As a result, printedboard 14 a exists near the high temperature area inbox 15. Therefore,intake port 18 is disposed in the high temperature area inbox 15. - On the other hand, as a flow-out port of control device accommodating unit,
exhaust port 19 ofbox 15 is formed onpanel 1 near printedboard 14 a inbox 15. That is,exhaust port 19 is also disposed near the high temperature area inbox 15. Further,exhaust port 19 communicates withduct 17. That is,exhaust port 19 communicates withsection 50 a at low pressure side. - In this configuration, a part of the air blown out from
fan 7forms air stream 63 to flow fromintake port 18 intobox 15. The air flowing intobox 15 cools printedboard 14 a, and is exhausted fromexhaust port 19 intoduct 17 outside ofbox 15. The inside ofduct 17 issuction section 50 a offan 7. As a result, sincebox 15 is at lower pressure thanintake port 18, the air securely passes intobox 15. That is,duct 17 communicating withexhaust port 19 communicates with indoorair intake port 38, andexhaust port 19 is at lower pressure thanintake port 18. Hence, a pressure difference occurs betweenintake port 18 andexhaust port 19, and the air is passed intobox 15, so thatcontrol device 14 is cooled effectively. -
Intake port 18 andexhaust port 19 are disposed in high temperature area near printedboard 14 a. Hence the high temperature air near printedboard 14 a is securely exhausted, and printedboard 14 a, that is, coolingdevice 14 is cooled effectively. - In
preferred embodiment 2, the location ofintake port 18 and the location ofexhaust port 19 are only examples, and the configuration is not particularly specified. That is, same action and effects are obtained ifintake port 18 is disposed to communicate with the high pressure section insection 50 at the high pressure side offan 7, andexhaust port 19 is disposed to communicate with the low pressure section ofsection 50 a at the low pressure side offan 7, and further if either one ofintake port 18 andexhaust port 19 is disposed in high temperature area near printedboard 14 a. -
Preferred embodiment 3 of the present invention is described below while referring to the drawing. Same components as inpreferred embodiments FIG. 11 is an internal schematic perspective view ofcontroller box 15 inpreferred embodiment 3 of the present invention. -
Intake port 18 communicates withsection 50 at the high pressure side offan 7. Further,intake port 18 is provided onback side 15 a ofbox 15 on an extension line linkingexhaust port 19 and printedboard 14 a.Exhaust port 19 communicates withduct 17. - In this configuration, a part of the air blown out from
fan 7forms air stream 64 to flow fromintake port 18 intobox 15. The air flowing intobox 15 cools printedboard 14 a, and flows almost straightly intoexhaust port 19, and is exhausted fromexhaust port 19 to outside ofbox 15. That is, the air is exhausted intoduct 17. - Printed
board 14 a is disposed on the way ofair stream 64 flowing straightly fromintake port 18 to exhaustport 19. Hence, the high temperature air around printedboard 14 a is securely exhausted, and printedboard 14 a, that is,control device 14 is cooled effectively. - In
preferred embodiment 3, the location ofintake port 18 and the location ofexhaust port 19 are only examples, and the configuration is not particularly specified. That is, same action and effects are obtained if printedboard 14 a,intake port 18, andexhaust port 19 are substantially disposed straightly. -
Preferred embodiment 4 of the present invention is described below while referring to the drawing. Same components as inpreferred embodiments 1 to 3 are identified with same reference numerals, and detailed description is omitted.FIG. 12 is a magnified view ofcorner part 20 ofcase 35 accommodating outdoorside turbo fan 8 inpreferred embodiment 4 of the present invention. -
Case 35 is composed ofplate metal member 35 a andplate metal member 35 b. Atcorner part 20 ofplate metal member 35 a andplate metal member 35 b, end portions ofplate metal members corner part 20, a small hole communicating with outside of coolingdevice 31 is formed asdrain hole 21. - Generally,
corner part 20 abuts against a plurality of members facing the outside of coolingdevice 31. Further, the portion communicating with outside of coolingdevice 31 is treated by caulking as sealing process for preventing invasion of dust or rainwater from outside. Incooling device 31, however, sincecorner part 20 is not caulked,drain hole 21 is formed.Drain hole 21 functions for draining the rainwater invading intosection 50 b for accommodatingfan 8 from outdoorair intake hole 45, and drains the rainwater invading intosection 50 b quickly. As a result, invasion of rainwater into the inside ofbox 4 is prevented. - The size of
drain hole 21 should be small enough so as not to lower the cooling performance due to leak of the air blown byfan 8 massively outside of coolingdevice 31, and large enough to drain water securely. - The configuration of cooling
device 31 inpreferred embodiment 4 may be further added to coolingdevice 31 inpreferred embodiments 1 to 3, and same action and effects are obtained. -
Preferred embodiment 5 of the present invention is described below while referring to the drawing. Same components as inpreferred embodiments 1 to 4 are identified with same reference numerals, and detailed description is omitted.FIG. 13 is a partially magnified view of openingpart 3 c offlange 3 inpreferred embodiment 5 of the present invention. -
Flange 3 includesflange 3 a as a first fixing member andflange 3 b as a second fixing member.Flange 3 a is attached totop face 35 d of coolingdevice 31.Flange 3 b is attached to both lateral faces 35 e andbottom face 35 f of coolingdevice 31. Openingpart 3 c for passingscrew 5 hasround hole 22 as a first opening part, andU-cut 23 as a second opening part.Round hole 22 is formed inflange 3 a, andU-cut 23 is formed inflange 3 b. U-cut 23 has a U-shaped notch. Although not shown inFIG. 13 ,U-cut 23 is similarly formed inflange 3 b attached tolateral face 35 e andbottom face 35 f at the opposite side of coolingdevice 31. - In this configuration, opening
part 3 c offlange 3 a isround hole 22 of circular hole shape, and openingpart 3 c offlange 3 b is U-cut 23 of U-shape. Hence as compared with openingpart 3 c formed of round holes only, the positioning and assembling efficiency is enhanced when assemblingcooling device 31 intobox 4. - When cooling
device 31 is assembled inbox 4,flange 3 a exists in the upper part ofscrew 5 penetrating throughround hole 22. Therefore, the rainwater is prevented from depositing on the upper part ofscrew 5 and staying in the upper part ofscrew 5. As a result, the rainwater existing in the upper part ofscrew 5 is prevented from invading into the inside ofbox 4 by running along the screw threads. - In the present
preferred embodiment 5, openingpart 3 c offlange 3 a has a round hole shape. However, same action and effects are obtained if openingpart 3 c offlange 3 a has square hole, polygonal hole, or other shape capable of covering the upper part ofscrew 5 penetrating through openingpart 3 c. The notch shape offlange 3 b is a U-cut. However, same action and effects are obtained as far as the end portion offlange 3 b is an open shape, not limited to U-cut 23, possibly including V-cut and others. - The configuration of cooling
device 31 inpreferred embodiment 5 may be further added to coolingdevice 31 inpreferred embodiments 1 to 4, and same action and effects are obtained. -
Preferred embodiment 6 of the present invention is described below while referring to the drawing. Same components as inpreferred embodiments 1 to 5 are identified with same reference numerals, and detailed description is omitted.FIG. 14 is a schematic perspective view oftop face 35 d before sealing process of coolingdevice 31 inpreferred embodiment 6 of the present invention.FIG. 15 is a schematic perspective view oftop face 35 d after sealing process of coolingdevice 31. - As shown in
FIG. 14 , the upper part ofcase 35 is composed ofplate metal member 35 a andplate metal member 35 c.Ridge portion 24 ofcase 35 in the abutting portion ofplate metal members caulking agent 25 and sealing agent.Caulking agent 25 is applied for sealing of coolingdevice 31. - The junction of
plate metal member 35 a andplate metal member 35 c, and the junction ofcase 35 andflange 3 are bonded by usingrivets 26. Further, the portion bonded by usingrivets 26 may be also sealed by usingcaulking agent 25. - Further, as shown in
FIG. 15 , after the caulking process of coolingdevice 31,ridge portion 24 formed bytop face 35 d andlateral face 35 e is further adhered withwaterproof tape 27 as sealing process.Top face 35 d is adhered with sealing and insulating part 28 (hereafter called insulating part 28) as a member having sealing effect and insulating effect, so as to coverrivets 26. Insulatingpart 28 is formed by using polyethylene sheet. Since insulatingpart 28 is formed by using polyethylene sheet, a high sealing performance and excellent insulating performance of coolingdevice 31 is realized in a simple configuration. - By this configuration,
ridge portion 24 is insulated in a double structure bycaulking agent 25 andwaterproof tape 27. Therefore, if one sealing process is defective, the sealed state is maintained by other sealing process. Hence, if rainwater is collected intop face 35 d, invasion of rainwater intocooling device 31 along the junction portion ofplate metal member 35 a andplate metal member 35 c, and the junction portion withrivets 26 can be securely prevented. - Further, by the sealing action of insulating
part 28, if coolingdevice 31 is installed outdoors, and rainwater is collected intop face 35 d, invasion of rainwater intocooling device 31 is prevented. Further, by insulating action of insulatingpart 28, if coolingdevice 31 is installed outdoors, andtop face 35 d is exposed to direct sunlight, temperature elevation by sunlight ofsection 50 for accommodatingfan 7 positioned at the rear side oftop face 35 d can be suppressed, and drop of cooling performance of coolingdevice 31 can be lessened. -
Caulking agent 25 as sealing agent andwaterproof tape 27 as sealing process in the present preferred embodiment are only examples, and are not particularly specified. Same action and effects are obtained by using members having similar waterproof and weatherproof properties and sealing properties of the junction portions. - A polyethylene sheet is used for insulating
part 28. However, insulatingpart 28 is not limited to polyethylene sheet alone. Same action and effects are obtained if insulatingpart 28 is made of waterproof, water resistant and heat resistant materials. - The configuration of cooling
device 31 inpreferred embodiment 6 may be further added to coolingdevice 31 inpreferred embodiments 1 to 5, and same action and effects are obtained. - The present invention is useful as a cooling device of a heating element storing box, such as a box-like structure installed outdoors such as mobile telephone base station or simple radio station, having heating elements such as communication devices in the inside, requiring cooling even in winter because the heat generation amount of heating elements is large, and having precision devices of which performance and life may be influenced by temperature, humidity, dust or rainwater.
Claims (10)
Applications Claiming Priority (3)
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JP2007063182A JP4867727B2 (en) | 2007-03-13 | 2007-03-13 | Cooling system |
JP2007-063182 | 2007-03-13 | ||
PCT/JP2008/000538 WO2008111310A1 (en) | 2007-03-13 | 2008-03-12 | Cooling device |
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US8251136B2 US8251136B2 (en) | 2012-08-28 |
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US12/526,303 Active 2029-08-02 US8251136B2 (en) | 2007-03-13 | 2008-03-12 | Cooling device |
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EP (1) | EP2120524B1 (en) |
JP (1) | JP4867727B2 (en) |
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AT (1) | ATE528980T1 (en) |
DK (1) | DK2120524T3 (en) |
WO (1) | WO2008111310A1 (en) |
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Also Published As
Publication number | Publication date |
---|---|
DK2120524T3 (en) | 2012-01-30 |
EP2120524A4 (en) | 2010-08-18 |
EP2120524A1 (en) | 2009-11-18 |
JP4867727B2 (en) | 2012-02-01 |
CN101632332B (en) | 2012-04-04 |
WO2008111310A1 (en) | 2008-09-18 |
JP2008227136A (en) | 2008-09-25 |
CN101632332A (en) | 2010-01-20 |
US8251136B2 (en) | 2012-08-28 |
EP2120524B1 (en) | 2011-10-12 |
ATE528980T1 (en) | 2011-10-15 |
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